Effect of different levels of zinc on the growth and yield of cotton Gossypium hirsutum L.
2009
Kaleri, A.H.
Seeds of cotton were drilled in rows 75cm apart, and 30 cm distance between plant to plant was maintained on well prepared beds using a four replicated Randomized Complete Block Design to test the various zinc levels i.e. 0.0, 5.0, 7.50, 10.00, 12.50 and 15.00 kg per ha. The zinc was applied zinc sulphate, the zinc was applied at 1st irrigation, while recommended dose of NP was applied in urea and DAP. All necessary cultural operations were adopted throughout the growing period. It was found that plant height, number of sympodia per plant, productive bolls per plant, staple length, G.O.T (%) and seed cotton yield affected significantly by the zinc levels. However, plant population and number of monopodia per plant were not affected by the zinc levels. Maximum plant height was recorded under no application of zinc (130.55 cm) while, Zn applied at 15.00 kg per ha recorded maximum sympodia (16.35 per plant), however 10.00 kg Zn per ha gave more number of bolls (5.30 per plant).
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